Thecoma in a mare     

Afshin Raoofi DVM  DVSc  Seyed Hossein Mardjanmehr DVM  PhD  Majid Masoudifard DVM  DVSc  Farajollah Adibhashemi DVM  DVSc  Peyman Asadian DVM  PhD 《Journal of Equine Veterinary Science》2006,26(12):588-591

A 4-year-old crossbred Thoroughbred mare was referred to the University of Tehran Veterinary Medical Teaching Hospital for evaluation of a mass in the pelvic cavity. The mare had been partially anorectic and pyrexic. On clinical examination, the mare was thin and depressed, with body temperature of 38°C, a pulse rate of 38 beats/minute, and a respiratory rate of 10 breaths/minute. Palpation per rectum revealed a large, smooth and tense mass in the anterior part of the pelvic cavity. Ultrasound examination confirmed the presence of a soft tissue mass with a thick wall. The inner surface of the mass had a villous-like appearance. The stroma of the mass was mottled, with accumulation of speckled and hypoechoic to slightly hyperechoic fluid. Hormone assays revealed low serum concentration of testosterone. Serum progesterone concentration indicated that active luteal tissue and serum estradiol concentration was 24 pg/ml. On histological examination, the sections from the tumor were composed of oval- or spindle-shaped cells loosely arranged in diffuse sheets or irregularly interlacing fascicles. On the basis of these histological findings, the large tumor mass of the left ovary was considered to be a thecoma. To our knowledge, the details of the clinical, ultrasonographic, endocrinologic, and histologic findings of this tumor in the mare have not been described in the veterinary literature.  相似文献   

蚕品种选育多用途化发展趋势   总被引：4，自引：0，他引：4  

杜鑫  费建明  李军  陈玉银 《蚕桑通报》2007,38(1):11-14

为了满足蚕桑生产发展多元化和提升改造传统蚕桑业发展需要开展的特殊用途蚕品种选育进展迅速,本文就以蚕丝生产为目的如雄蚕品种、细纤度蚕品种、粗纤度蚕品种、人工饲料育品种及广食性蚕品种、天然彩色茧蚕品种等的选育,以及非蚕丝生产为目的如吐平面丝蚕品种、吐丝胶茧蚕品种、生物反应器专用蚕品种、药食专用蚕品种等育种研究进展进行概述.  相似文献   

二甲基甲酰胺对家蚕毒性试验     

李军  李媛  杜鑫  陈玉银 《蚕桑通报》2007,38(2):18-20

二甲基甲酰胺对家蚕的毒性较低，只有在很高的浓度食下时才表现出急性中毒死亡，并且随着龄期的增加，家蚕的耐毒性增加，3龄蚕比2龄蚕有更强的耐毒性。低浓度的二甲基甲酰胺（DMF）对家蚕生命率和经济性状都没有显著影响。DMF对家蚕的毒性有积累作用，3龄期连续添毒稀释10倍的DMF原液24h没有观察到急性中毒死亡，但连续添毒90h后，可最终导致家蚕中毒死亡。  相似文献   

Seasonal changes of mineral nutrients and phenolics in pomegranate (Punica granatum L.) fruit     

Seyed Hossein Mirdehghan  Majid Rahemi 《Scientia Horticulturae》2007

Pomegranate fruit is an important source of potentially healthy bioactive compounds and mineral nutrients. Changes in total phenolic compound, concentrations, and levels of macronutrients (P, K, N, Mg, Ca and Na) and micronutrients (Zn, Cu, Mn, Fe and B) in arils and peel of pomegranate fruit were recorded from 10 days after full bloom until harvest. Total phenolics levels increased at early stage of growth both in peel and arils of fruit, but thereafter generally decreased during maturation and reached to 3.70 and 50.22 mg g⁻¹ of dry weight in arils and peel, respectively, at harvest. The amount of total phenolics in peel was markedly higher than arils of pomegranate fruit. The concentration of most elements in arils and peel decreased during fruit growth and development. At harvest the relative order of concentration of macronutrients both in arils and peel was K > N > Ca > P > Mg > Na. The concentration of most micronutrients was greater in the arils than in the peel especially in early season. The relative order of concentration of micronutrients in arils was B > Fe > Zn > Cu > Mn. The accumulation of all the macro- and microelement within the fruit also increased during fruit growth and development. These results provide important data on total phenolics and macro- and micronutrient changes during fruit growth and development, emphasizing that pomegranate fruit can be a good source of bioactive compounds and minerals.  相似文献   

Surface wildfire in conifer broad-leaved forests of the Hyrcanian region of Iran: short-term effect on regeneration and damage to trees     

Seyed Abdolkhalegh Yadegarnejad  Mehdi Dylam Jafarabad  Najmeh Mohammadi Savadkoohi 《林业研究》2015,26(2):425-434

Wildfires in recent years have resulted in degradation and damage to the Hyrcanian forest ecosystems in Northern Iran.This study was carried out to investigate fire damage to trees and changes in regeneration in early-season growth after wildfires in the Golestan Province.For this purpose,a random sampling plan was used,with 60 circular plots(each plot is 1000 m2) for each stand and 240 circular(25 m2) plots for regeneration within the burned and unburned areas,respectively.In each plot,habitat factors were recorded,including crown canopy percentage,forest stratum,herb-layer cover percentage,species,diameter at breast height,tree and regeneration quality,and quantity of seedlings and saplings.Our results showed that bark is an important factor for fire resistance in Hyrcanian forests.The Persian ironwood and European yew has the highest and lowest fire resistance;as broad leave species are more resistant than needle leaf species.Density of regeneration in unburned area was higher than burned area,and statistical analysis showed significant differences for all species between two areas.Fire effects on sapling were different among species which indicates sapling has different resistance to fire.Forest floor fuel,season,stand composition and microclimate have more effects on fire severity while environmental factors,regeneration and management practices shaping future composition stands.  相似文献   

Effect of high-dose phytase and citric acid,alone or in combination,on growth performance of broilers given diets severely limited in available phosphorus     

H.R. Taheri  Z. Jabbari  S. Adibnia  M.H. Shahir  S.A. Hosseini 《British poultry science》2015,56(6):708-715

1. Two trials were conducted to evaluate the effect of high-dose phytase alone or in combination with citric acid (CA) in the diet severely limited in available phosphorus (P) on performance, plasma P and plasma Ca of broilers from 22 to 42 d of age.

2. In Trial 1, 297 21-d-old female chicks were placed into 27 pens and allocated to 9 maize-soybean meal-based dietary treatments, which were a positive control [PC, 4.23 g/kg non-phytate P (NPP)] and 8 negative control (NC, 1.35 g/kg NPP) groups consisting of two concentrations of CA (0 and 20 g/kg) and 4 concentrations of phytase (0, 1000, 2000 and 4000 U/kg) in a 2 × 4 factorial arrangement. In Trial 2, 192 21-d-old male chicks were placed into 24 pens and allocated to 6 wheat-canola meal-based dietary treatments, which were a PC (4.2 g/kg NPP), a NC (1.68 g/kg NPP) and 4 NC groups consisting of two concentrations of CA (0 and 20 g/kg) and two concentrations of phytase (2000 and 4000 U/kg) in a 2 × 2 factorial arrangement.

3. In both trials, birds fed on the PC had significantly higher average daily gain (ADG), average daily feed intake (ADFI), plasma P and lower feed conversion ratio (FCR) and plasma Ca than those of birds fed on the NC. CA supplementation significantly increased ADG and ADFI. There was a significant interaction between CA and phytase on plasma P where CA improved the effect of phytase on plasma P. In Trial 1, phytase addition improved ADG, ADFI, FCR and plasma Ca linearly.

4. Briefly, this research showed the interaction effect between CA and phytase on plasma P when broilers were fed on diets based on maize-soybean meal or wheat-canola meal. The results showed that CA supplementation lowered the concentration of phytase that is needed in low NPP diets to increase plasma P.  相似文献   

Effects of tree species diversity on leaf litter decomposition process in semi-arid Mediterranean oak forests     

Sarabi  Hamzeh Jafari  Pilehvar  Babak  Vajari  Kambiz Abrari  Waez-Mousavi  Seyed Mohammad 《European Journal of Forest Research》2021,140(6):1377-1390

European Journal of Forest Research - Many studies have been conducted on the effects of changes in plant diversity and species composition on ecosystem functioning and plant productivity due to...  相似文献   

Dietary curcumin nanoparticles promoted the performance,antioxidant activity,and humoral immunity,and modulated the hepatic and intestinal histology of Nile tilapia fingerlings     

Abdel-Tawwab  Mohsen  Eissa  El-Sayed Hemdan  Tawfik  Wesam A.  Abd Elnabi  Heba E.  Saadony  Saadea  Bazina  Walaa K.  Ahmed  Ragaa A. 《Fish physiology and biochemistry》2022,48(3):585-601

Fish Physiology and Biochemistry - The current study investigated the effects of dietary curcumin nanoparticles (C-NPs) on the performance, hemato-biochemical profile, digestive enzymes activities,...  相似文献   

Herbaceous species diversity in relation to fire severity in Zagros oak forests,Iran     

Morteza Pourreza  Seyed Mohsen Hosseini  Ali Akbar Safari Sinegani  Mohammad Matinizadeh  Seyed Jalil Alavai 《林业研究》2014,25(1):113-120

Zagros forests are mainly covered byQuercus brantii L. coppices and oak sprout clumps occupy the forest area like patches. We investigated post-fire herbaceous diversity in the first growing season after fire. For this purpose neighboring burned and unburned areas were selected with the same plant species and ecological conditions. The data were collected from areas subjected to different fire severities. Overall 6 treatments were considered with respect to fire severity and the mi-crosites of inside and outside of oak sprout clumps including： unburned inside and outside of sprout clumps （Ni and No）, inside of sprout clumps that burned with high fire severity （H）, inside of sprout clumps that burned with moderate fire severity （M）, outside of sprout clumps that burned with low fire severity （OH and OM）. Different herbaceous com-position was observed in the unburned inside and outside of oak sprout clumps. The species diversity and richness were increased in treatments burned with low and moderate fire severity. However, in treatment burned with high fire severity （H）, herbaceous cover was reduced, even-ness was increased, and richness and diversity were not significantly changed. We concluded that besides the microsites conditions in forest, fire severity is an inseparable part of the ecological effect of fire on her-baceous composition.  相似文献   

Identification of Matrix Metalloproteinase-2 and -9 Activities within Intestinal Mucosa of Clinically Healthy Beagle Dogs     

Mohsen HANIFEH  Minna M RAJAM?KI  Laura M?KITALO  Pernilla SYRJ?  Satu SANKARI  Susanne KILPINEN  Thomas SPILLMANN 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(8):1079-1085

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